Not a good idea.I could go into technical stuff but let's save it for another day.The idea has been discussed before,not exactly this but much smaller range of integers like maximum 5 digits.That was a turn down too.In your case,it's equally difficult to remember.Until and unless we associate bitcoin addresses with something that is far easier to remember,example,human brains forget the text but pictorial memories live for longer time in brain.Maybe if we can associate a bitcoin address to a picture and human has to just remember the picture.